Squashed 'src/rocksdb/' content from commit 224932d

git-subtree-dir: src/rocksdb
git-subtree-split: 224932d4d0b561712107d747c662df181c39644d

java/org/rocksdb/test/BackupableDBTest.java

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+// Copyright (c) 2014, Facebook, Inc.  All rights reserved.
+// This source code is licensed under the BSD-style license found in the
+// LICENSE file in the root directory of this source tree. An additional grant
+// of patent rights can be found in the PATENTS file in the same directory.
+
+package org.rocksdb.test;
+
+import org.rocksdb.*;
+
+public class BackupableDBTest {
+  static final String db_path = "/tmp/backupablejni_db";
+  static final String backup_path = "/tmp/backupablejni_db_backup";
+  static {
+    RocksDB.loadLibrary();
+  }
+  public static void main(String[] args) {
+
+    Options opt = new Options();
+    opt.setCreateIfMissing(true);
+
+    BackupableDBOptions bopt = new BackupableDBOptions(backup_path, false,
+        true, false, true, 0, 0);
+    BackupableDB bdb = null;
+
+    try {
+      bdb = BackupableDB.open(opt, bopt, db_path);
+
+      bdb.put("abc".getBytes(), "def".getBytes());
+      bdb.put("ghi".getBytes(), "jkl".getBytes());
+      bdb.createNewBackup(true);
+
+      // delete record after backup
+      bdb.remove("abc".getBytes());
+      byte[] value = bdb.get("abc".getBytes());
+      assert(value == null);
+      bdb.close();
+
+      // restore from backup
+      RestoreOptions ropt = new RestoreOptions(false);
+      RestoreBackupableDB rdb = new RestoreBackupableDB(bopt);
+      rdb.restoreDBFromLatestBackup(db_path, db_path,
+          ropt);
+      rdb.dispose();
+      ropt.dispose();
+
+      // verify that backed up data contains deleted record
+      bdb = BackupableDB.open(opt, bopt, db_path);
+      value = bdb.get("abc".getBytes());
+      assert(new String(value).equals("def"));
+
+      System.out.println("Backup and restore test passed");
+    } catch (RocksDBException e) {
+      System.err.format("[ERROR]: %s%n", e);
+      e.printStackTrace();
+    } finally {
+      opt.dispose();
+      bopt.dispose();
+      if (bdb != null) {
+        bdb.close();
+      }
+    }
+  }
+}